Improvement in sulky-plows



2 Sheets-Sbeet 1.

J. PIERPONT.

Sulky-Plow.

,841. Patented March'5, 1878.

N,PFTERS4 PHDTOJJTHOGRAPHER, WASHINGTON. D C

2 Sheets-Sheet 2. J. PIERPONT. Sulky-Plow.

No. 200,841. Patented March 5, I878.

Wainssew flWfl MPEIERS, PHOTO-LITHOGRAPHER. WASHINGTON. O C

.UNITED STATES PATENT OEEIcE.

JOS A P E PONT, 0F BUSHNELL, ILLINOIS.

" 'l MPROV EM ENT' IN SULKY-PLOWS.

Specification forming part of Letters Patent'No. $200,841, dated March5, 1878; application filed June9,1877.

To all whom; it mag concern:

- Be it known that I, fJosHUA P ERPONT', of.

useful Improvements in Sulky-Plows, and d0 hereby declare thatthe-following is afull, clear,

and exact description thereof, which will enable, others skilled ingtheart to which it apperi tains to make and use the same, reference bein ghad to the accompanying drawings, and to the letters of referencemarkcd'thereon, which form a part of this specification.

This invention relates to improvements in sulky-plows and consists,first, in connecting the plow with the axle by means of two yokes, oneprojecting forward and one rearward from the axle, the rear yoke hingedto the plowbeam and the forward yoke connected thereto by a link orlever, which permits of oscillation of the yokes to raise and lower theplow, and also furnishes a convenient hand-hold by which the operationmay be performed.

The invention further consists in so constructing and connecting theaforesaid parts that, in operating them to raise the plow fromEEGtgTOHIId, the point of the plow will be raised The invention furtherconsists in the use of a lockingdever, in combination with aforesaiddevices, by means of which the plow may be prevented from rising above acertain fixed depth, while it is allowed to fall and rise freely belowsaid fixed point, all as hereinafter fully described.

In the accompanying drawings, Figure 1 is a top view of a sulky-plowembodying my invention. Fig. 2 is a sectional view in the line as as inFig. 1. Fig. 3 is a detail view, showing the connection of the crankends to the main part of the axle. Fig. 4 is a rear elevation.

Referring to the parts by letters, A represents the elevated centralpart of the axle, formed of an interior bar of wrought-iron, A, andexterior bar A. The lower ends of the bar A are bent inward, as shownplainly at a, and downward, as shown at a, and the lower ends of the barA are bent outward and bolted to the part a of the bar A, as shown inFig. 3. The upper portions of the bars A A" are braced to each other bybraces a. B B are short crank-axles, each with one end formed into aspindle for a supporting-wheel, (Land, its other end journaled to theaxle A by means of a yoke, c, and a suitable bearing in the part a. ofthe bar A. Each crank-axle B is provided with a lever, b, andspring-pawl b, by means ofwhich it may be adjusted in the ord'inarymanner, to raise and lower either side of the axle A, and be held, whenadjusted, by

engaging the spring-pawls in the segmental racks 1;. Dis the tongue,secured at its rear end to the axle A, and forward to the front side ofthe foot-rest frame E, by means of a yoke, e, by which it maybe adjustedlaterally. F is the plow, and F the plow-beam. G is a yoke formed of twobars, G G, their forward ends hinged or journaled, one to the innerprojecting end of each crank-axle B, and their rear ends journaled tothe rear portion of the plow-beam in such manner that the yoke mayoscillate in a vertical plane. H is a yoke formed of arms H H, the rearends of which are journaled upon the same axial bearings as the forwardends of the yoke G, and the forward ends of which are journaled at h toa lever, I, the lower end of which is journaled to the end of theplow-beam at f, and the upper end of which extends upward to within easyreach of the operator from his seat J.

The yokes G and H may be pivoted at any suitable points on the axleA.One of the arms G is extended forward to form a lever, G, on which thedriver may place his foot and press downward to raise the plow above theground, and to hold it in an elevated position while turning, &c. K is alever pivoted to the axle A, and its rear end turned inward so that itwill rest upon one of the bars G when its forward end is raised or drawnbackward by the driver. K is a rack-bar, with which the lever K may beengaged to hold it in any desired position.

When the plow is adjusted to run at a certain depth the lever K may beadjusted and fixed in position, as described, with its rear end restingon a bar, G, and will act as a stop to prevent the plow rising in hardground and other places, but will not interfere with the wheels risingto pass over obstructions, nor prevent the plow going below the depth towhich adjusted.

The lever K may be released from the rackbar and thrown forward when itis desired to elevate the plow.

L is a chain secured to the plow-beam at its lower end, and its upperportion may be engaged with a hook, I, at the crown of the arched axleA.

When it is desired to plow a given depthsay, six inches-the wheels andplow are adjusted to run the plow a few inches deepersay, eight inches.The chain L is then adjusted to only permit the plow running at thesixinch depth, and may thus be made to transfer the weight of thefurrow-slice from the bottom of the plow to the wheels, and thus reducefriction by transferring it from surfaces with sliding contact tosurfaces with rolling contact.

The dotted lines at Fig. 2 show plainly the manner of raising the plowpoint first by drawing the upper end of the lever I backward, and itwill be evident from the inspection of the same figure that theplow-beam, being connected to the yoke H by the link or lever I, willpermit both yokes G H to oscillate freely in vertical planes, and thusallow the plow to rise and fall freely.

The draft-hook or clevis M maybe attached to the end of the plow-beam orto the lower portion of the lever I.

What I claim as new, and desire to secure by Letters Patent, is-

1. In a snlky-plow in which the plow-beam is connected to the axle bymeans of apivoted yoke projecting rearward from the axle or frame, thecombination of a pivoted yoke projecting forward from the axle or frame,and connected to the plow-beam by means of a link or lever, so as topermit the plow to rise and lower by the oscillation of the yokes,substantially as and for the purposes specified.

2. In combination with a plow connected to the axle by a rear yoke, aforward yoke, link, and lever, I, by means of which the plow may beraised from the soil with its point end first, substantially asdescribed, and for the purpose specified.

3. The lever K, arranged to operate with the yokes G H, lever I, axle A,and wheels 0., substantially as described, and for the purposespecified.

In testimony that I claim the foregoing as my own I aflix my signaturein presence of two witnesses.

JOSHUA PIERPONT.

Witnesses:

SoLoN BANFILL, L. V. HOOVER.

